Detail publikačního výsledku

Optimization of Tungsten Anodization for Thin WO₃ Layers for Aplication in Cold Field Emission Cathodes

KOŠELOVÁ, Z.; KNÁPEK, A.; FOHLEROVÁ, Z.

Originální název

Optimization of Tungsten Anodization for Thin WO₃ Layers for Aplication in Cold Field Emission Cathodes

Anglický název

Optimization of Tungsten Anodization for Thin WO₃ Layers for Aplication in Cold Field Emission Cathodes

Druh

Stať ve sborníku mimo WoS a Scopus

Originální abstrakt

This study focuses on optimizing the anodization process for producing high-quality tungsten oxide (WO₃) layers on tungsten substrates to enhance cold field emission (CFE) cathode performance. Tungsten samples were anodized in a 0.3 M H₃PO₄ electrolyte solution, with voltage and duration systematically varied to control oxide layer thickness, roughness, and chemical composition. Advanced surface characterization techniques, including XPS, AFM, and SEM, were used to evaluate the layers. Results indicate that anodization at 7.5–12.5 V for 10 minutes yields WO₃-rich layers with low roughness, suitable for stable dielectric barriers to improve electron tunneling. These findings support the potential of anodized WO₃ layers in high-performance CFE applications.

Anglický abstrakt

This study focuses on optimizing the anodization process for producing high-quality tungsten oxide (WO₃) layers on tungsten substrates to enhance cold field emission (CFE) cathode performance. Tungsten samples were anodized in a 0.3 M H₃PO₄ electrolyte solution, with voltage and duration systematically varied to control oxide layer thickness, roughness, and chemical composition. Advanced surface characterization techniques, including XPS, AFM, and SEM, were used to evaluate the layers. Results indicate that anodization at 7.5–12.5 V for 10 minutes yields WO₃-rich layers with low roughness, suitable for stable dielectric barriers to improve electron tunneling. These findings support the potential of anodized WO₃ layers in high-performance CFE applications.

Klíčová slova

Anodization, tungsten oxide (WO₃), cold field emission (CFE), dielectric layer, surface characterization, XPS, AFM, SEM

Klíčová slova v angličtině

Anodization, tungsten oxide (WO₃), cold field emission (CFE), dielectric layer, surface characterization, XPS, AFM, SEM

Autoři

KOŠELOVÁ, Z.; KNÁPEK, A.; FOHLEROVÁ, Z.

Rok RIV

2025

Vydáno

05.11.2024

Nakladatel

Comenius University Bratislava

Místo

Bratislava

ISBN

978-80-223-5941-2

Kniha

Proceedings of 14th solid state surfaces and interfaces

Strany od

31

Strany do

34

Strany počet

4

BibTex

@inproceedings{BUT193447,
  author="Zuzana {Košelová} and Alexandr {Knápek} and Zdenka {Fohlerová}",
  title="Optimization of Tungsten Anodization for Thin WO₃ Layers for Aplication in Cold Field Emission Cathodes",
  booktitle="Proceedings of 14th solid state surfaces and interfaces",
  year="2024",
  pages="31--34",
  publisher="Comenius University Bratislava",
  address="Bratislava",
  isbn="978-80-223-5941-2"
}